Vehicle Lamp Optical Layout for Shared Light Exit Surface
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Solution Overview
Problem
Existing vehicle lamp units require multiple light modules arranged in specific directions to emit light, leading to redundant parts and increased complexity, as each module needs a separate light exit surface to emit light into a predefined direction.
Innovation Solution
An optical device is positioned between the light modules and the light exit surface, intersecting both light beam paths to redirect light from the first and second light modules onto a shared light exit surface, eliminating the need for additional light exit surfaces and reducing redundant parts by allowing both light functions to be emitted through the same surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple light modules are arranged in specific directions to emit light into predefined directions, then each light function can be emitted correctly, but the number of parts increases and structural complexity increases
Solution Approach 1:
The patent merges multiple light emission paths into a single light exit surface. The optical device combines light from the first light module (first light function) and second light module (second light function) and directs both through the same light exit surface, eliminating the need for separate light exit surfaces for each light module.
Solution Approach 2:
The light exit surface serves multiple functions by receiving and transmitting light from different light modules that generate different light functions. The optical device enables a single light exit surface to handle multiple light beam paths and emit multiple different light functions simultaneously.
2Reliability
If multiple light modules are arranged in specific directions, then each light function can be emitted correctly, but the structural complexity increases
Solution Approach 1:
The optical device acts as an intermediary between the multiple light modules and the single light exit surface. It receives light from different directions, processes and redirects the light beams, and ensures proper emission through the shared light exit surface, simplifying the overall structure while maintaining emission accuracy.
3Ease of operation
If each light module has its own light exit surface, then light can be emitted in predefined directions, but redundant parts increase
Solution Approach 1:
The patent combines multiple light exit surfaces into a single shared light exit surface. The optical device redirects light from different light modules so that all light functions are emitted through this one surface, eliminating redundant parts while maintaining directional control through optical redirection.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration reduces the number of parts required and allows both light functions to be directed towards the same light exit surface, enhancing the efficiency and simplicity of the lamp unit while maintaining effective illumination of the road.
Implementation Method 1
transmit a first portion of the light received from the first light module through the semi-transparent element, such that the transmitted first portion of the light from the first light module traverses towards the light exit surface
Implementation Method 2
reflect a second portion of the light received from the first light module towards the reflector element
Implementation Method 3
redirect the second portion of the light reflected from the semi-transparent element towards the light exit surface
Implementation Method 4
the optical device can advantageously redirect light received from the first light module and light received from the second light module, such that the redirected light is emitted along a common light beam path
Data Source
Figure 1~3
AI summary
Lamp unit (1) for a vehicle, wherein said lamp unit (1) is configured to generate at least two different light functions, said lamp unit (1) comprises: a first light module (2), a second light module (3), a light exit surface (4), which is configured to receive light generated by the first light module (2) and/or second light module (3) wherein the lamp unit (1) comprises an optical device (5), which is configured to receive light from the first light module (2) and/or the second light module (3) and to emit said received light towards the light exit surface (4) in such a way, that the light exit surface (4) is illuminated by light from the first light module (2) and/or the second light module (3).